—What are the two _________ doing?
—They are taking care of several ____________.
A. German; sheeps
B. Germen; sheep
C. Germans; sheep
---He’s never been to an aquarium.
---_______.
| A．Neither have I | B．Neither do I |
| C．I never too | D．I don’t too |
Would you mind ______ those old jeans?
| A．don’t wear | B．not to wear |
| C．aren’t wearing | D．not wearing |
I have been skating _______ nine o’clock.
| A．for | B．since | C．at | D．from |
He _____ when the UFO arrived.
| A．was sleeping | B．were sleeping |
| C．has slept | D．is asleep |
The teacher said that they ______ hard-working students.
| A．is | B．are | C．were | D．was |